<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body {
            min-width: 600px;
        }

        #content {
            padding: 0 200px;
            overflow: hidden;
        }

        #header,
        #footer {
            height: 100px;
            text-align: center;
            border: 1px solid deeppink;
            background: gray;
            text-align: center;
        }

        #content .middl,
        #content .left,
        #content .right {
            padding-bottom: 10000px;
            margin-bottom: -10000px;
            height: 700px;
            text-align: center;
        }

        #content .middle {
            float: left;
            width: 100%;
            background: pink;
            height: 700px;
            text-align: center;
        }

        #content .left {
            position: relative;
            left: -200px;
            margin-left: -100%;
            float: left;
            width: 200px;
            background: yellow;
        }

        #content .right {
            position: relative;
            right: -200px;
            margin-left: -200px;
            float: left;
            width: 200px;
            background: yellow;
        }

        .clearfix {
            *zoom: 1;
        }

        .clearfix:after {
            content: "";
            display: block;
            clear: both;
        }
    </style>
</head>

<body>
    <div id="header">header</div>
    <div id="content" class="clearfix">
        <div class="middle">conter</div>
        <div class="left">left</div>
        <div class="right">right</div>
    </div>
    <div id="footer">footer</div>
</body>

</html>